HydroSewer - Drainage Network
HydroSewer is a professional stormwater and sewer network analysis tool for iOS and iPadOS that runs EPA SWMM 5.2 simulations locally.
The App DNA
What makes this app unique?
It replaces manual paper-based field notes and desktop-only simulation cycles with a mobile-first workflow, removing the friction of syncing site observations with hydraulic models.
For Civil engineers, hydraulic modelers, and field technicians.
What does it look like?
Key features
Runs hydraulic simulations locally on-device using the industry-standard EPA SWMM 5.2 engine without cloud dependency
Allows users to pin notes and photos to specific manholes, outfalls, or pipes on an interactive map
Generates a PDF report of open field notes for distribution to team members or clients
How much does it cost?
The one-time purchase for reporting serves as a conversion lever for professional users while maintaining free access to core simulation tools to build a user base.
Velocity
Maintenance developmentnew contentUX improvementsShow more...
HydroSewer - Drainage Network maintains a maintenance-level cadence, with only two distinct versions released in the analyzed window and an average of 48 days since the last update. Development is currently focused on expanding field data collection capabilities, including the ability to attach photos and notes to infrastructure elements. The project has shifted toward adding functional utility for field technicians, though the overall release frequency remains low. The app is currently operating on a cycle that prioritizes feature additions over rapid iteration.
Who built it?
Transparent Blue Water
5 apps tracked · Utilities
HydroCalc Plus
Pipe Calc - Redes Hidráulicas
Sewer Pipe Calculator
NPSH CalculatorUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for HydroSewer - Drainage Network
How's the Utilities market?
HydroSewer targets the professional Utilities segment with a specialized mobile-first simulation tool. The absence of direct mobile-native competitors in the EPA SWMM space provides a temporary advantage in establishing a field-to-office workflow standard.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for HydroSewer - Drainage Network
Where is it heading?
The market for mobile hydraulic modeling is currently underserved, leaving HydroSewer in a strong position to define the standard for field-to-office workflows. Continued investment in professional reporting features will be necessary to justify the Pro purchase as the user base grows.
- The latest release adds field notes and photo attachments, showing active investment in the field-to-office workflow rather than maintenance-only updates.
- The current 7-8 week update cadence indicates a steady development pace, which is sufficient for a specialized professional tool.
The SWOT
- On-device EPA SWMM 5.2 engine removes connectivity dependencies
- Interactive map-based field notes create persistent project-specific data layers
- Automated as-built discrepancy flagging could deepen field-to-office workflow integration
Next best moves
Ship in-app tutorial for EPA SWMM file imports because zero ratings suggest high barrier to entry for new users → increase conversion
The counter-intuitive read
The lack of a cloud-sync requirement is a feature for security-conscious engineering firms…
Read the full takeBottom line
HydroSewer's on-device simulation engine provides a clear technical advantage for field engineers, but the lack of user-generated social proof remains a barrier to professional adoption. Focusing on onboarding will help convert initial downloads into active, long-term users.
Unlock 1 critical friction, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is HydroSewer compatible with standard EPA SWMM files?
Does HydroSewer require an internet connection to run simulations?
What features are included in the HydroSewer Pro purchase?
Sources
- [1] App Store
Report last updated